Go top start Doran's Ring, 21/0/9 and take some AP runes (take damned mana regen).
Then just rush Rabadon's and the rest is situational. I usually go Rylai's when doing good and a situational tanky item when doing bad.
Also cooldown boots no exceptions

R>E>Q>W (take one rank in W at level 4 to learn Pounce)

When in cougar form, you fucking blow shit up because you're a fucking cougar just go W>E>Q on someone and take like 25% of their health wait 5 seconds do it again cause you're fucking Nidalee the Blind Monk

HAVE FUN

Notice: This Nidalee was a lot more fun before the dodge removal because you could bank on your passive dodge + masteries dodge + the dodge movement speed mastery + cougar form + any brush to escape every fucking gank ever no exceptions gotta go fast

With, say, mercs, wit's end, trinity, atmogs, tiamat, he would be a hell of a pusher

And does anybody know if indomitable mastery reduces the health lost from sion's aa's? I am going to go test that right now

However, starting with doran's blade and getting lifesteal masteries and 3 flat ad reds or 1 ad red and 1 quint will bring your level 1 ad to 100, and lifesteal to 6%, negating the cost of the skill for the first level